Bae Suzy, an innocent college student is invited to join the reality show Liar Game, a psychological survival game where participants have to trick each other and the one who ultimately succeeds wins the prize money of ₩10 billion (US$9.3 million). Tempted with the chance to pay off her debts, Suzy decided to join the game and gets conned out of the initial money given to her. In desperation, she asks genius ex-con swindler and former psychology professor Lee JongSuk to help her win the game.